Is this the same thing as an arduino?

Arduino is just a specification for a microcontroller. Although there is an official "Arduino Brand" this model does 100% of what that model does for $5 less. I have a kit that connects every GPIO pin of Arduino, and it connected fine. So for all intents and purposes, this is "the same thing as an arduino."

Ordered two of these and get the same error message: avrdude: ser_open() : can't open device "\\.\COM4": the system cannot find the file specified.

When this happens, I've fixed it by closing the Arduino IDE, unplugging my USB cable from the UNO, plugging it back in, and restarting the IDE. (Save the file before closing the IDE, if desired.) This has always corrected the issue for me, even when the IDE shows an Arduino on COM4 and it's selected yet still seems unavailable.

Does this use the CH340 ?

No. And no. He wants to know the USB chip, not the MCU chip. The USB chip is a CP2021 or whatever, it isn't the CH340.

is the Elegoo compatible with the official Arduino program? (1.8.1 to be exact)

While I have not updated to 1.8.1 yet, I have used it with previous versions with no issues, so I see no reason why it should not work with the latest. I have used 3rd party programs and libraries as well.

Desertcart Logo

Deliver to Aruba

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🚀 Elevate your DIY game with ELEGOO UNO R3 — where speed meets reliability!

INTUITIVE I O LABELING - Clear pin names on headers make wiring effortless—no more guesswork, just pure productivity.
VERSATILE POWER OPTIONS - Seamlessly power your board via USB 5V or a stable 7-12V DC input for flexible setups.
ROBUST SHORT CIRCUIT PROTECTION - Built-in PTC fuse safeguards your board from wiring mishaps, keeping your projects safe.
BLAZING FAST 16 M HZ MICROCONTROLLER - Experience smooth, responsive project execution with the ATmega328P core.
PLUG PLAY ARDUINO IDE COMPATIBILITY - Jumpstart your coding with full support for the Arduino IDE, perfect for pros and tinkerers alike.

The ELEGOO UNO R3 Board features a 16 MHz ATmega328P microcontroller paired with an ATmega16U2 USB interface chip, delivering faster data transfer and enhanced memory for Arduino IDE projects. It supports dual power inputs (USB 5V and 7-12V DC) with a recommended 9V 1A for stability, and includes a PTC resettable fuse for short-circuit protection. Clear I/O labeling simplifies wiring, making it an ideal, RoHS-compliant development board for professional and hobbyist electronics projects.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

ƒ95

Duties & taxes incl.

Arubastore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

ChatGPT - opens in a new tab Perplexity - opens in a new tab Claude - opens in a new tab Grok - opens in a new tab Google AI - opens in a new tab

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

View all Trustpilot reviews

Brand	ELEGOO
Product Dimensions	8 x 5.99 x 0.99 cm; 27.22 g
Item model number	EL-CB-001
Manufacturer	Elegoo
Series	ELEGOO UNO R3 Board
Color	Black
Standing screen display size	3
Processor Brand	Atmel
Processor Type	Cortex A8
Processor Speed	16 MHz
Processor Count	1
RAM Size	2 KB
Memory Technology	SRAM
Computer Memory Type	72-Pin EDO SIMM Memory
Hard Disk Description	HDD
Hard Drive Interface	ATA-4
Graphics Card Description	Integrated
Graphics RAM Type	DDR DRAM
Wireless Type	Bluetooth
Optical Drive Type	BD-R
Operating System	Windows 10
Are Batteries Included	No
Item Weight	27.2 g

ELEGOOUNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant

Details

Description

Specifications

Have a Question? See What Others Asked

Common Questions